Maryland Flow Report

SNOFLO^®

April 7 2025

Streamgauge	Streamflow	Gauge Height	Water Temp	Air Temp	Elevation	Watershed
POCOMOKE RIVER NEAR WILLARDS 2025-04-07T01:45:00.000-04:00 USGS 01485000	44 cfs	6.08^ft		50^°	22^ft	Pocomoke
NASSAWANGO CREEK NEAR SNOW HILL 2025-04-07T01:30:00.000-04:00 USGS 01485500	25 cfs	2.19^ft		51^°	21^ft	Pocomoke
MANOKIN BRANCH NEAR PRINCESS ANNE 2025-04-07T01:15:00.000-04:00 USGS 01486000	4 cfs	1.76^ft		51^°	14^ft	Pocomoke
BEAVERDAM CREEK NEAR SALISBURY 2017-10-02T00:25:00.000-05:00 USGS 01486500	17 cfs	1.14^ft		74^°	7^ft	Blackwater-Wicomico
CHICAMACOMICO RIVER NEAR SALEM 2025-04-07T01:15:00.000-04:00 USGS 01490000	12 cfs	0.76^ft		50^°	2^ft	Blackwater-Wicomico
CHOPTANK RIVER NEAR GREENSBORO 2025-04-07T01:15:00.000-04:00 USGS 01491000	95 cfs	3.05^ft	60^°	50^°	5^ft	Choptank
TUCKAHOE CREEK NEAR RUTHSBURG 2025-04-07T01:45:00.000-04:00 USGS 01491500	46 cfs	0.93^ft		50^°	14^ft	Choptank
SALLIE HARRIS CREEK NEAR CARMICHAEL 2025-04-07T01:45:00.000-04:00 USGS 01492500	3 cfs	0.79^ft		50^°	14^ft	Chester-Sassafras
UNICORN BRANCH NEAR MILLINGTON 2025-04-07T02:00:00.000-04:00 USGS 01493000	14 cfs	1.38^ft		49^°	8^ft	Chester-Sassafras
CHESTERVILLE BRANCH NEAR CRUMPTON 2025-04-07T02:00:00.000-04:00 USGS 01493112	3 cfs	0.97^ft	51^°	50^°	10^ft	Chester-Sassafras
MORGAN CREEK NEAR KENNEDYVILLE 2025-04-07T01:45:00.000-04:00 USGS 01493500	5 cfs	1.33^ft		50^°	4^ft	Chester-Sassafras
BIG ELK CREEK AT ELK MILLS 2025-04-07T01:45:00.000-04:00 USGS 01495000	60 cfs	3.50^ft		48^°	70^ft	Chester-Sassafras
SUSQUEHANNA RIVER AT CONOWINGO 2025-04-07T01:35:00.000-04:00 USGS 01578310	36700 cfs	13.36^ft		48^°	21^ft	Lower Susquehanna
DEER CREEK AT ROCKS 2025-04-07T01:15:00.000-04:00 USGS 01580000	111 cfs	2.37^ft		47^°	262^ft	Lower Susquehanna
DEER CREEK NEAR DARLINGTON 2025-04-07T01:15:00.000-04:00 USGS 01580520	238 cfs	2.02^ft		48^°	49^ft	Lower Susquehanna
BYNUM RUN AT BEL AIR 2025-04-07T01:15:00.000-04:00 USGS 01581500	7 cfs	0.66^ft		48^°	260^ft	Gunpowder-Patapsco
WINTERS RUN NEAR BENSON 2025-04-07T01:15:00.000-04:00 USGS 01581700	25 cfs	1.39^ft		48^°	190^ft	Gunpowder-Patapsco
PLUMTREE RUN NEAR BEL AIR 2025-04-07T01:25:00.000-04:00 USGS 01581752	1 cfs	1.05^ft	54^°	48^°	187^ft	Gunpowder-Patapsco
OTTER POINT CREEK NEAR EDGEWOOD 2021-01-31T02:25:00.000-05:00 USGS 01581757	56 cfs	1.26^ft		31^°	6^ft	Gunpowder-Patapsco
GUNPOWDER FALLS AT HOFFMANVILLE 2025-04-07T01:15:00.000-04:00 USGS 01581810	43 cfs	1.62^ft		46^°	550^ft	Gunpowder-Patapsco
GRAVE RUN NEAR BECKLEYSVILLE 2025-04-07T02:00:00.000-04:00 USGS 01581830	9 cfs	0.85^ft		47^°	560^ft	Gunpowder-Patapsco
GEORGES RUN NEAR BECKLEYSVILLE 2025-04-07T01:15:00.000-04:00 USGS 01581870	17 cfs	0.47^ft		47^°	521^ft	Gunpowder-Patapsco
GUNPOWDER FALLS NEAR PARKTON 2025-04-07T02:00:00.000-04:00 USGS 01581920	58 cfs	1.73^ft	46^°	47^°	352^ft	Gunpowder-Patapsco
BEETREE RUN AT BENTLEY SPRINGS 2025-04-07T01:15:00.000-04:00 USGS 01581960	8 cfs	0.87^ft		46^°	491^ft	Gunpowder-Patapsco
LITTLE FALLS AT BLUE MOUNT 2025-04-07T01:15:00.000-04:00 USGS 01582000	50 cfs	0.42^ft		47^°	306^ft	Gunpowder-Patapsco
GUNPOWDER FALLS AT GLENCOE 2025-04-07T01:20:00.000-04:00 USGS 01582500	138 cfs	1.38^ft		48^°	247^ft	Gunpowder-Patapsco
PINEY RUN AT DOVER 2025-04-07T01:45:00.000-04:00 USGS 01583100	10 cfs	1.62^ft		48^°	380^ft	Gunpowder-Patapsco
WESTERN RUN AT WESTERN RUN 2025-04-07T01:35:00.000-04:00 USGS 01583500	45 cfs	1.22^ft		48^°	265^ft	Gunpowder-Patapsco
BAISMAN RUN AT BROADMOOR 2025-04-07T01:20:00.000-04:00 USGS 01583580	0 cfs	1.17^ft		48^°	333^ft	Gunpowder-Patapsco
BEAVERDAM RUN AT COCKEYSVILLE 2025-04-07T01:25:00.000-04:00 USGS 01583600	14 cfs	2.15^ft		48^°	245^ft	Gunpowder-Patapsco
LONG GREEN CREEK AT GLEN ARM 2025-04-07T01:15:00.000-04:00 USGS 01584050	5 cfs	1.07^ft		48^°	290^ft	Gunpowder-Patapsco
LITTLE GUNPOWDER FALLS AT LAUREL BROOK 2025-04-07T01:15:00.000-04:00 USGS 01584500	26 cfs	1.20^ft		48^°	260^ft	Gunpowder-Patapsco
WHITEMARSH RUN NEAR FULLERTON 2025-04-07T01:50:00.000-04:00 USGS 01585090	1 cfs	1.22^ft		49^°	138^ft	Gunpowder-Patapsco
WHITEMARSH RUN AT WHITE MARSH 2025-04-07T02:00:00.000-04:00 USGS 01585100	3 cfs	3.07^ft		50^°	42^ft	Gunpowder-Patapsco
HONEYGO RUN NEAR WHITE MARSH 2025-04-07T01:50:00.000-04:00 USGS 01585104	1 cfs	0.55^ft		50^°	25^ft	Gunpowder-Patapsco
WEST BRANCH HERRING RUN AT IDLEWYLDE 2025-04-07T02:05:00.000-04:00 USGS 01585200	1 cfs	1.11^ft		48^°	286^ft	Gunpowder-Patapsco
MOORES RUN AT RADECKE AVE AT BALTIMORE 2022-09-30T03:34:00.000-04:00 USGS 01585230	0 cfs	1.41^ft	64^°	66^°	43^ft	Gunpowder-Patapsco
CRANBERRY BRANCH NEAR WESTMINSTER 2025-04-07T01:30:00.000-04:00 USGS 01585500	1 cfs	1.42^ft		46^°	672^ft	Gunpowder-Patapsco
NORTH BRANCH PATAPSCO RIVER AT CEDARHURST 2025-04-07T01:00:00.000-04:00 USGS 01586000	67 cfs	1.69^ft		48^°	423^ft	Gunpowder-Patapsco
BEAVER RUN NEAR FINKSBURG 2025-04-07T01:00:00.000-04:00 USGS 01586210	18 cfs	1.00^ft		48^°	431^ft	Gunpowder-Patapsco
MORGAN RUN NEAR LOUISVILLE 2025-04-07T02:00:00.000-04:00 USGS 01586610	20 cfs	1.62^ft		48^°	430^ft	Gunpowder-Patapsco
PATAPSCO RIVER AT HOLLOFIELD 2025-04-07T01:15:00.000-04:00 USGS 01589000	77 cfs	1.68^ft		48^°	190^ft	Gunpowder-Patapsco
EAST BRANCH HERBERT RUN AT ARBUTUS 2025-04-07T01:40:00.000-04:00 USGS 01589100	1 cfs	0.91^ft		50^°	49^ft	Gunpowder-Patapsco
GWYNNS FALLS AT GLYNDON 2019-02-28T03:15:00.000-05:00 USGS 01589180	0 cfs	0.98^ft		34^°	643^ft	Gunpowder-Patapsco
GWYNNS FALLS NEAR DELIGHT 2025-04-07T01:50:00.000-04:00 USGS 01589197	2 cfs	0.19^ft		48^°	536^ft	Gunpowder-Patapsco
GWYNNS FALLS AT VILLA NOVA 2025-04-07T01:30:00.000-04:00 USGS 01589300	20 cfs	0.94^ft		48^°	367^ft	Gunpowder-Patapsco
DEAD RUN AT FRANKLINTOWN 2025-04-07T01:40:00.000-04:00 USGS 01589330	2 cfs	0.47^ft		48^°	313^ft	Gunpowder-Patapsco
GWYNNS FALLS AT WASHINGTON BLVD AT BALTIMORE 2025-04-07T01:20:00.000-04:00 USGS 01589352	40 cfs	2.55^ft		51^°	18^ft	Gunpowder-Patapsco
JONES FALLS AT SORRENTO 2025-04-07T01:15:00.000-04:00 USGS 01589440	15 cfs	7.77^ft		48^°	236^ft	Gunpowder-Patapsco
SAWMILL CREEK AT GLEN BURNIE 2025-04-07T01:45:00.000-04:00 USGS 01589500	3 cfs	1.92^ft		51^°	34^ft	Gunpowder-Patapsco
SOUTH FORK JABEZ BRANCH AT MILLERSVILLE 2025-04-07T01:55:00.000-04:00 USGS 01589795	0 cfs	3.34^ft		50^°	60^ft	Severn
PATUXENT RIVER NEAR UNITY 2025-04-07T01:55:00.000-04:00 USGS 01591000	19 cfs	2.12^ft		49^°	383^ft	Patuxent
CATTAIL CREEK NEAR GLENWOOD 2025-04-07T01:45:00.000-04:00 USGS 01591400	13 cfs	0.65^ft		49^°	382^ft	Patuxent
PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON 2025-04-07T01:45:00.000-04:00 USGS 01591610	57 cfs	1.75^ft	71^°	49^°	310^ft	Patuxent
HAWLINGS RIVER NEAR SANDY SPRING 2025-04-07T01:45:00.000-04:00 USGS 01591700	14 cfs	0.55^ft		50^°	307^ft	Patuxent
PATUXENT RIV NEAR LAUREL 2025-04-07T01:15:00.000-04:00 USGS 01592500	21 cfs	4.36^ft		49^°	160^ft	Patuxent
LITTLE PATUXENT RIVER AT GUILFORD 2025-04-07T02:00:00.000-04:00 USGS 01593500	15 cfs	2.07^ft		50^°	267^ft	Patuxent
LITTLE PATUXENT RIVER AT SAVAGE 2025-04-07T01:15:00.000-04:00 USGS 01594000	52 cfs	3.23^ft		50^°	126^ft	Patuxent
PATUXENT RIVER NEAR BOWIE 2025-04-07T01:45:00.000-04:00 USGS 01594440	187 cfs	4.80^ft		50^°	20^ft	Patuxent
WESTERN BRANCH AT UPPER MARLBORO 2025-04-07T01:15:00.000-04:00 USGS 01594526	37 cfs	2.03^ft		51^°	9^ft	Patuxent
MCMILLAN F NEAR FORT PENDLETON 2020-06-30T01:30:00.000-04:00 USGS 01594950	2 cfs	0.49^ft		79^°	2453^ft	North Branch Potomac
NORTH BRANCH POTOMAC RIVER AT STEYER 2025-04-07T01:15:00.000-04:00 USGS 01595000	353 cfs	3.29^ft		46^°	2276^ft	North Branch Potomac
NORTH BRANCH POTOMAC RIVER AT KITZMILLER 2025-04-07T01:15:00.000-04:00 USGS 01595500	1350 cfs	4.79^ft		50^°	1575^ft	North Branch Potomac
SAVAGE RIVER NEAR BARTON 2025-04-07T01:15:00.000-04:00 USGS 01596500	122 cfs	2.10^ft	48^°	48^°	1659^ft	North Branch Potomac
CRABTREE CREEK NEAR SWANTON 2016-06-18T00:15:00.000-05:00 USGS 01597000	154 cfs	1.96^ft		52^°	1626^ft	North Branch Potomac
SAVAGE RIV BL SAVAGE RIV DAM NEAR BLOOMINGTON 2025-04-07T01:15:00.000-04:00 USGS 01597500	79 cfs	0.80^ft	44^°	49^°	1382^ft	North Branch Potomac
GEORGES CREEK AT FRANKLIN 2025-04-07T01:45:00.000-04:00 USGS 01599000	75 cfs	3.72^ft		53^°	975^ft	North Branch Potomac
WILLS CREEK NEAR CUMBERLAND 2025-04-07T01:00:00.000-04:00 USGS 01601500	444 cfs	3.44^ft		51^°	703^ft	North Branch Potomac
NORTH BRANCH POTOMAC RIVER NEAR CUMBERLAND 2025-04-07T01:15:00.000-04:00 USGS 01603000	924 cfs	3.18^ft		52^°	589^ft	North Branch Potomac
TOWN CREEK NEAR OLDTOWN 2025-04-07T01:15:00.000-04:00 USGS 01609000	153 cfs	2.99^ft		53^°	567^ft	Cacapon-Town
POTOMAC RIVER AT PAW PAW 2025-04-07T01:15:00.000-04:00 USGS 01610000	2450 cfs	5.97^ft		53^°	501^ft	Cacapon-Town
SIDELING HILL CREEK NEAR BELLEGROVE 2025-04-07T02:00:00.000-04:00 USGS 01610155	72 cfs	1.34^ft		52^°	482^ft	Cacapon-Town
POTOMAC RIVER AT HANCOCK 2025-04-07T01:15:00.000-04:00 USGS 01613000	2920 cfs	4.70^ft		52^°	396^ft	Conococheague-Opequon
CONOCOCHEAGUE CREEK AT FAIRVIEW 2025-04-07T01:45:00.000-04:00 USGS 01614500	334 cfs	2.21^ft		49^°	438^ft	Conococheague-Opequon
MARSH RUN AT GRIMES 2025-04-07T01:15:00.000-04:00 USGS 01617800	6 cfs	1.06^ft		51^°	405^ft	Conococheague-Opequon
ANTIETAM CREEK NEAR WAYNESBORO 2025-04-07T01:45:00.000-04:00 USGS 01619000	62 cfs	2.48^ft		48^°	547^ft	Conococheague-Opequon
ANTIETAM CREEK NEAR SHARPSBURG 2025-04-07T01:30:00.000-04:00 USGS 01619500	179 cfs	2.66^ft		51^°	367^ft	Conococheague-Opequon
CATOCTIN CREEK NEAR MIDDLETOWN 2025-04-07T01:45:00.000-04:00 USGS 01637500	51 cfs	1.95^ft		50^°	436^ft	Middle Potomac-Catoctin
POTOMAC RIVER AT POINT OF ROCKS 2025-04-07T01:45:00.000-04:00 USGS 01638500	5580 cfs	2.33^ft	59^°	51^°	192^ft	Middle Potomac-Catoctin
MONOCACY RIVER AT BRIDGEPORT 2025-04-07T01:30:00.000-04:00 USGS 01639000	334 cfs	4.23^ft		48^°	332^ft	Monocacy
BIG PIPE CREEK AT BRUCEVILLE 2025-04-07T02:00:00.000-04:00 USGS 01639500	120 cfs	1.56^ft		48^°	370^ft	Monocacy
MONOCACY RIVER AT MONOCACY BLVD AT FREDERICK 2025-04-07T02:00:00.000-04:00 USGS 01642190	1880 cfs	4.98^ft		50^°	259^ft	Monocacy
MONOCACY RIVER AT JUG BRIDGE NEAR FREDERICK 2025-04-07T01:30:00.000-04:00 USGS 01643000	2530 cfs	5.19^ft		50^°	231^ft	Monocacy
BENNETT CREEK AT PARK MILLS 2025-04-07T01:45:00.000-04:00 USGS 01643500	34 cfs	1.68^ft		50^°	304^ft	Monocacy
SENECA CREEK AT DAWSONVILLE 2025-04-07T01:55:00.000-04:00 USGS 01645000	73 cfs	2.15^ft		50^°	216^ft	Middle Potomac-Catoctin
POTOMAC RIVER NEAR WASH 2025-04-07T01:45:00.000-04:00 USGS 01646500	5850 cfs	3.48^ft	45^°	51^°	43^ft	Middle Potomac-Catoctin
NORTH EAST BRANCH ANACOSTIA RIVER AT RIVERDALE 2025-04-07T02:05:00.000-04:00 USGS 01649500	33 cfs	0.63^ft	58^°	51^°	14^ft	Middle Potomac-Anacostia-Occoquan
NW BRANCH ANACOSTIA RIVER NEAR COLESVILLE 2025-04-07T01:45:00.000-04:00 USGS 01650500	11 cfs	1.60^ft		50^°	271^ft	Middle Potomac-Anacostia-Occoquan
NW BRANCH ANACOSTIA RIVER NEAR HYATTSVILLE 2023-11-14T01:30:00.000-05:00 USGS 01651000	10 cfs	1.18^ft	80^°	59^°	21^ft	Middle Potomac-Anacostia-Occoquan
PISCATAWAY CREEK AT PISCATAWAY 2025-04-07T01:30:00.000-04:00 USGS 01653600	20 cfs	2.63^ft		51^°	16^ft	Middle Potomac-Anacostia-Occoquan
MATTAWOMAN CREEK NEAR POMONKEY 2025-04-07T01:50:00.000-04:00 USGS 01658000	23 cfs	2.44^ft	73^°	51^°	46^ft	Lower Potomac
ZEKIAH SWAMP RUN NEAR NEWTOWN 2025-04-07T01:15:00.000-04:00 USGS 01660920	35 cfs	1.45^ft		52^°	37^ft	Lower Potomac
ST CLEMENT CREEK NEAR CLEMENTS 2025-04-07T01:15:00.000-04:00 USGS 01661050	9 cfs	0.08^ft		53^°	11^ft	Lower Potomac
ST MARYS RIVER AT GREAT MILLS 2025-04-07T01:30:00.000-04:00 USGS 01661500	10 cfs	1.54^ft		54^°	13^ft	Lower Potomac
YOUGHIOGHENY RIVER NEAR OAKLAND 2025-04-07T02:15:00.000-04:00 USGS 03075500	739 cfs	3.66^ft		46^°	2370^ft	Youghiogheny
YOUGHIOGHENY RIVER AT FRIENDSVILLE 2025-04-07T01:45:00.000-04:00 USGS 03076500	1310 cfs	3.77^ft	51^°	48^°	1555^ft	Youghiogheny
BEAR CREEK AT FRIENDSVILLE 2025-04-07T01:30:00.000-04:00 USGS 03076600	402 cfs	3.01^ft		48^°	1640^ft	Youghiogheny
CASSELMAN RIVER AT GRANTSVILLE 2025-04-07T01:30:00.000-04:00 USGS 03078000	281 cfs	2.07^ft		46^°	2135^ft	Youghiogheny
BIRCH BRANCH AT SHOWELL 2025-04-07T01:45:00.000-04:00 USGS 0148471320	1 cfs	3.82^ft		49^°	6^ft	Chincoteague
MINEBANK RUN NEAR GLEN ARM 2025-04-07T02:04:00.000-04:00 USGS 0158397967	1 cfs	4.19^ft		48^°	225^ft	Gunpowder-Patapsco

Streamflow levels across Maryland are currently 54.0% of normal, with the Susquehanna River At Conowingo reporting the highest discharge in the state with 36700cfs and gauge stage of 13.36 ft. Meanwhile, the Monocacy River At Bridgeport is seeing a spike in streamflows today after experiencing a 206.42% increase since yesterday, and currently running at 334cfs.

Maximum gauge stage in the state was last observed at the Susquehanna River At Conowingo, currently reporting a stage of 13.36ft. The Bear Creek At Friendsville in the Youghiogheny watershed is surging for this time of year at 402cfs, about 133.07% of normal.

Maryland Flow History

Maryland's flow conditions are heavily influenced by its location along the Atlantic coast and the Chesapeake Bay, as well as its varied topography. The state experiences a humid subtropical climate, with hot and humid summers and mild winters. Major surface flows include the Potomac and Patuxent Rivers, which feed into the Chesapeake Bay. Reservoirs and dams such as the Conowingo Dam and Loch Raven Reservoir also contribute to the state's hydrology. The state's watershed includes the Chesapeake Bay watershed, which covers 64,000 square miles and includes six states and the District of Columbia. Snowpack in the Appalachian Mountains can also impact flow conditions in the state. Overall, Maryland's flow conditions are complex and influenced by a variety of factors.

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